JP6761883B2 - Water spouting device and bathtub device - Google Patents

Description

The present invention relates to a water discharge device for discharging film-like water and a bathtub device including the water discharge device.

Conventionally, a water discharge device for discharging membrane-like water (hereinafter, membrane-like water) has been known (see, for example, Patent Document 1). It is installed at the top of the bathtub and is configured to allow membranous water to be discharged into the bathtub. The water flow that flows down from the water spouting device in a waterfall shape is excellent in aesthetics, and a relaxing effect can be obtained by sprinkling film-like water on the shoulders of the bather, which contributes to motivating users to purchase.

JP-A-2002-153391

By the way, it is known that the shape of the membranous water discharged from this type of water discharge device is easily disturbed. The present inventor has come to recognize that there is room for further improvement in the structure of the conventional water discharge device in order to suppress the disorder of the shape.

The present invention has been made in view of such a problem, and an object of the present invention is to suppress disturbance of the shape of the membranous water when it is discharged from the discharge port.

In order to solve the above problems, an aspect of the present invention relates to a water discharge device. The water discharge device is a water discharge device for discharging film-like water, and includes a water discharge member in which a slit-shaped discharge port and a discharge passage for supplying water to the discharge port are formed. , A storage chamber is formed to store the water flowing in from the upstream side as storage water, and an acute angle flow path is formed to send the stored water in the storage chamber to the discharge port, and the side surfaces on both sides in the width direction of the discharge passage are formed. , The width of the discharge passage is widened as it approaches the discharge port from the storage chamber, and the acute angle formed by the virtual line parallel to the width direction of the discharge port and the tangent line passing through the opening edge of the discharge port on the side surface. It is characterized in that the angle of is formed so as to be 45 ° or more and less than 90 °.
According to this aspect, it becomes easy to suppress the division of the membranous water while suppressing the squeezing of the membranous water, and the disorder of the shape of the membranous water can be suppressed.

In the above-described embodiment, the side surfaces of the discharge passage on both sides in the width direction may be formed by an arc portion curved inward in the width direction from the back surface of the discharge passage on the back side of the discharge port toward the discharge port. ..
According to this aspect, the water flowing in from the upstream side is guided to the discharge port along the side surface of the discharge passage while maintaining the momentum, and it becomes easy to discharge the water flow from the discharge port along the tangent line passing through the opening edge, and the membranous water. It becomes easier to stably suppress the shrinkage of the water.

In the above-described embodiment, the side surfaces on both sides in the width direction of the discharge passage include an inlet side surface portion connected to the opening edge of the discharge port and a single or a plurality of back side surface portions provided on the back side of the discharge port from the inlet side surface portion. However, the entrance side surface portion and the back side surface portion are formed so that the one located on the back side of the discharge port is smaller than the one on the discharge port side at an acute angle formed by the tangent line passing through the surface portion and the virtual line. May be done.
According to this aspect, the water flowing in from the upstream side is easily guided along the side surface of the discharge passage while maintaining the momentum. Therefore, it becomes easy to discharge the water flow along the tangent line passing through the opening edge from the discharge port, and it becomes easy to stably suppress the squeeze of the membranous water.

Another aspect of the present invention relates to a bathtub device. The bathtub device includes the water discharge device of the above-described embodiment and a bathtub in which the water discharge device is installed.

According to the present invention, when the film-like water is discharged from the discharge port, the disorder of the shape of the film-like water can be suppressed.

FIG. 1A is a side sectional view showing a conventional water discharge device, FIG. 1B is a plan sectional view thereof, and FIG. 1C is a front view showing a film-like water discharged from the water discharge device. is there. It is a perspective view which shows the use state of the water discharge device which concerns on 1st Embodiment. It is a block diagram which shows the water supply system used for the water discharge device which concerns on 1st Embodiment. It is a front view of the water discharge device which concerns on 1st Embodiment. It is an exploded perspective view of the water discharge device which concerns on 1st Embodiment. It is a side sectional view which shows the use state of the water discharge device which concerns on 1st Embodiment. FIG. 7A is a plan view showing a discharge port and a discharge passage of the water discharge device according to the first embodiment, and FIG. 7B is a view showing a part of side surfaces on both sides in the width direction of the discharge passage. It is a front view which shows typically the membrane-like water which is discharged from a discharge port. FIG. 9A is a diagram showing a water flow when the side surface of the discharge passage is formed by a straight portion, and FIG. 9B is a diagram showing a water flow when the side surface of the discharge passage is formed by an arc portion. It is a figure which shows. FIG. 10A is a plan view showing a discharge port and a discharge passage of the water discharge device according to the second embodiment, and FIG. 10B is a view showing a part of side surfaces on both sides in the width direction of the discharge passage. FIG. 11A is a plan view showing a discharge port and a discharge passage of the water discharge device according to the third embodiment, and FIG. 11B is a view showing a part of side surfaces on both sides in the width direction of the discharge passage. FIG. 12A is a plan view showing a discharge passage of the water discharge device according to the first modification of the third embodiment, and FIG. 12B is a plan view showing the discharge passage of the water discharge device according to the second modification. Is. It is a top view which shows the discharge passage of the water discharge device which concerns on Comparative Example 3.

First, the contents of the basic studies conducted before the invention of the present invention will be described.

1A and 1B are side sectional views and plan sectional views showing a conventional water discharge device 310, and FIG. 1C is a front view schematically showing a film-like water W discharged from the water discharge device 310. is there.

The water discharge device 310 includes a water discharge member 313. The water discharge member 313 is formed with a slit-shaped discharge port 311 and a discharge passage 333 for supplying water to the discharge port 311. An inflow port 349 is formed on the inner surface of the discharge passage 333. In the water discharge member 313, when water is sent into the discharge passage 333 from the inflow port 349, a wide film-like water W is discharged from the discharge port 311. In the following description, the direction in which the discharge port 311 extends is referred to as the left-right direction X, the horizontal direction orthogonal to this is referred to as the front-rear direction Y, and the vertical direction is referred to as the up-down direction Z.

Here, when the water flow supplied into the discharge passage 333 flows in from the inflow port 349, the water flow is disturbed due to a sudden change in the cross section of the flow path. The flow velocity of the water flow discharged from the discharge port 311 is affected by the turbulence when it flows in from the inflow port 349, and the shape of the film-like water W is easily disturbed.

Further, in order to discharge the wide film-like water W, the discharge passage 333 has a wide and flat shape having a wide passage width and a low passage height, so that the water flow flowing inside the discharge passage 333 is also thick. Becomes thinner. Therefore, the water flow discharged from the discharge port 311 is easily affected by turbulent flow in the discharge passage 333, catching of foreign matter, and the like, and the flow velocity is also likely to vary from this point as well.

Further, the distance from the inflow port 349 to the discharge port 311 changes depending on the position in the width direction of the discharge port 311, and the larger the width dimension of the film-like water W, the larger the difference between the minimum distance and the maximum distance tends to be. Therefore, the flow velocity of the water flow discharged from the discharge port 311 tends to vary depending on the position in the width direction as the width dimension of the membrane water W increases, and the shape of the membrane water W tends to be disturbed.

Further, surface tension acts on the film-like water W discharged from the discharge port 311. Therefore, the film-like water W tends to shrink so as to narrow the width dimension due to surface tension as the distance from the discharge port 311 increases.

Therefore, as a first device, the present inventor provides a storage chamber for storing the water flowing in from the upstream side as a storage water and a throttle flow path for sending the stored water in the storage chamber to the discharge port in the discharge passage. Formed. As a result, the flow velocity of the water flowing into the storage chamber from the upstream side is lower than that when the passage height of the discharge passage is constant, and the water flow velocity is effectively rectified so as to be uniform in the width direction of the discharge passage. To. As a result, the flow velocity of the water flow discharged from the discharge port can be easily made uniform in the width direction, and the disorder of the shape of the film-like water can be suppressed.

Further, as a second device, the present inventor has made the shape so that the passage width of the discharge passage widens as it approaches the discharge port side from the storage chamber side. As a result, the water flow flows along the side surface of the discharge passage, and the water flow discharged from both ends in the width direction of the discharge port can include a velocity component toward the outside in the width direction. As a result, the timing at which the film-like water begins to squeeze due to surface tension can be delayed, and the squeeze of the film-like water can be suppressed in a wide range from the time when the water is discharged from the discharge port to the time when the water is landed.

Here, as a result of conducting an experimental study using the water spouting device devised as described above, the present inventor has further as a further problem, a film discharged from the discharge port when the width of the discharge passage is too wide. It was found that the water may be divided in the width direction. This is because the velocity component of the water flow discharged from both ends in the width direction toward the outside in the width direction becomes too large, and the water flow discharged from both ends in the width direction becomes easier to separate from the water flow discharged from the center in the width direction. Conceivable.

In order to solve this problem, the present inventor suppresses the division of the membranous water while suppressing the squeezing of the membranous water by setting the angle formed by the side surfaces on both sides in the width direction of the discharge passage within a predetermined range. It was found that it became easier and the disorder of the shape of the membranous water could be suppressed. Hereinafter, the details of the embodiment according to the present invention will be described.

[First Embodiment]
FIG. 2 is a perspective view showing a usage state of the water discharge device 10 according to the first embodiment. The water discharge device 10 is used for the bathtub device 100. The bathtub device 100 includes a bathtub 110 in addition to the water discharge device 10. The bathtub 110 is formed in a box shape with an opening at the top, and bathtub water 111 is stored inside. The inner side surface of the bathtub 110 is provided with a back side surface 113 that the bather comes into contact with when taking a bathing posture. The bathtub 110 is provided with an installation surface 117 on the rim portion 115 on the upper side of the back side surface 113, and the water discharge device 10 is installed on the installation surface 117.

FIG. 3 is a configuration diagram showing a water supply system 120 used in the water discharge device 10. The water supply system 120 includes a water supply pump 121 provided on the upstream side of the water discharge device 10. The water supply pump 121 is connected to the water conveyance portion 41 (described later) of the water discharge device 10 via the discharge side conduit 123, and is connected to the bathtub 110 serving as a water supply source via the suction side conduit 125. When the water supply pump 121 is driven, the bathtub water 111 in the bathtub 110 is sucked through the suction side conduit 125, and water is pumped to the water guiding portion 41 of the water discharge device 10 through the discharge side conduit 123. When water is pumped to the water guiding portion 41, the water discharge device 10 discharges the membranous water W from the main body portion 39 (described later).

FIG. 4 is a front view of the water discharge device 10. The water discharge device 10 includes a water discharge member 13 in which a slit-shaped discharge port 11 is formed, and the film-like water is discharged forward from the discharge port 11. In the following description, the direction in which the discharge port 11 extends is referred to as the left-right direction X, the horizontal direction orthogonal to this is referred to as the front-rear direction Y, and the vertical direction is referred to as the up-down direction Z.

FIG. 5 is an exploded perspective view of the water discharge device 10. The water discharge device 10 includes a water discharge member 13 and an exterior cover 15. The water discharge member 13 is configured by assembling the lower split member 17 and the upper split member 19. Each of the dividing members 17 and 19 has a shape in which the water discharge member 13 is divided in the vertical direction Z.

FIG. 6 is a side sectional view showing a usage state of the water discharge device 10. This figure is also a cross-sectional view taken along the line AA of FIG. In this figure, the columnar portion 59 described later is omitted. As shown in FIGS. 5 and 6, the lower split member 17 has a lower wall portion 21, a pair of side wall portions 23, and a rear wall portion 25. The lower wall portion 21 is placed on the installation surface 117. Each side wall portion 23 rises from the left and right side portions of the lower wall portion 21, and the rear wall portion 25 rises from the rear portion of the lower wall portion 21.

As shown in FIG. 6, the upper split member 19 has a first upper wall portion 27 and a second upper wall portion 29. The first upper wall portion 27 is arranged above the lower wall portion 21, and is in contact with each side wall portion 23 and the rear wall portion 25 from above. The second upper wall portion 29 is arranged above the first upper wall portion 27, and a hollow space 35 is provided between the upper wall portions 27 and 29.

A lighting device 37 is attached to the front portion of the upper split member 19. The lighting device 37 projects colored light or white light having a predetermined wavelength forward. These colored lights and the like are projected onto the film-like water, bathers, etc., and a good visual effect can be obtained. The exterior cover 15 is attached to the upper split member 19 so as to cover the lighting device 37 from above and partially cover a part of the water discharge member 13 from the front.

The lower split member 17 and the upper split member 19 are detachably assembled by fasteners such as screws (not shown). As shown in FIG. 5, the fastener is an insertion hole 61 formed in the side wall portion 23 and the rear wall portion 25 of the lower split member 17, and the columnar portion 59 protruding from the lower wall portion 21 toward the upper split member 19. The tip portion is attached to the upper split member 19.

As shown in FIG. 6, the water discharge member 13 includes a main body portion 39 and a water conveyance portion 41. The main body 39 is composed of the wall portions 21, 23, 25 of the lower split member 17 and the first upper wall portion 27 of the upper split member 19. The main body 39 is placed on the installation surface 117 and is formed flat so as to extend in the left-right direction X. A plurality of water guiding portions 41 project downward from the main body portion 39 and are provided at intervals in the left-right direction X (see FIG. 4).

The water guide portion 41 is inserted into a through hole 119 formed in the installation surface 117 of the bathtub 110. A headrace 43 for supplying water to the downstream side is formed inside the water guide 41, and a discharge side conduit 123 is connected to the tip thereof. A fixing member 131 such as a nut is attached to a portion of the water guiding portion 41 protruding to the opposite side of the installation surface 117 by screwing or the like. The water discharge device 10 is fixed to the bathtub 110 by sandwiching the bathtub 110 between the main body 39 and the fixing member 131. A sealing member 133 such as a packing is interposed between the fixing member 131 and the bathtub 110.

The main body 39 is formed with a discharge port 11 that opens in front of the main body 39 and a discharge passage 33 for supplying water to the discharge port 11. The discharge port 11 and the discharge passage 33 are formed between the lower split member 17 and the upper split member 19. More specifically, it is formed by being surrounded by the wall portions 21, 23, 25 of the lower split member 17 and the first upper wall portion 27 of the upper split member 19.

FIG. 7A is a plan view showing the discharge port 11 and the discharge passage 33. This figure is also a plan view of the lower split member 17. The discharge port 11 is formed so as to extend linearly in the left-right direction X in a plan view. The discharge passage 33 is formed flat so as to extend in the left-right direction X in a plan view.

The discharge passage 33 communicates between the inflow port 49 into which water is sent from the headrace 43 and the discharge port 11. As shown in FIGS. 6 and 7, a storage chamber 45 and a throttle flow path 47 are formed in the discharge passage 33. A plurality of inflow ports 49 are formed on the lower surface 45a, which is the inner wall surface of the storage chamber 45. Water flows into the storage chamber 45 from the headrace 43 on the upstream side through the inflow port 49, and the water is temporarily stored as the storage water.

The throttle flow path 47 is provided on the downstream side of the storage chamber 45, and communicates the storage chamber 45 with the discharge port 11. The throttle flow path 47 is formed so that the height of the passage is smaller than that of the storage chamber 45. The stored water in the storage chamber 45 is sent out to the discharge port 11 through the throttle flow path 47. The stored water is squeezed when passing through the squeezing flow path 47, so that the flow velocity is increased and the stored water is vigorously discharged from the discharge port 11.

As shown in FIG. 7A, the side surfaces 33a on both sides of the discharge passage 33 in the width direction are formed so that the passage width of the discharge passage 33 widens as it approaches the discharge port 11 side from the storage chamber 45 side. More specifically, each side surface 33a is formed so that the passage width of the discharge passage 33 continuously expands in the range from the back surface 33b of the discharge passage 33 on the back side of the discharge port 11 to the discharge port 11. ..

FIG. 7B is a diagram showing a part of side surfaces 33a on both sides in the width direction of the discharge passage 33. Let L1 be a virtual line parallel to the width direction of the discharge port 11, and let L2 be a tangent line passing through the opening edge 51 of the discharge port 11 on the side surface 33a of the discharge passage 33. The virtual line L1 is parallel to the left-right direction X, which is the width direction of the discharge port 11, and passes through the opening edges 51 on both sides of the discharge port 11 in the width direction. At this time, the side surface 33a of the discharge passage 33 is formed so that the angle θ1 at the acute angle formed by the virtual line L1 and the tangent line L2 is 45 ° or more and less than 90 °. The reason for this will be explained.

8 (a) and 8 (b) are front views schematically showing the film-like water W discharged from the discharge port 11. When the angle θ1 is set to less than 90 °, when the stored water in the storage chamber 45 is discharged from the discharge port 11 through the throttle flow path 47, the water flow flows along the side surface 33a of the discharge passage 33, and both ends in the width direction of the discharge port 11. The water flow discharged from the portion 11a includes a velocity component outward in the width direction. As a result, as shown in FIG. 8A, the timing at which the film-like water W begins to shrink due to surface tension can be delayed, and a wide range from the time when the water is discharged from the discharge port 11 to the time when the water is landed can be delayed. This makes it easier to suppress the squeezing of the membranous water W.

On the other hand, when the angle θ1 is less than 45 °, as a result of an experimental study by the present inventor, as shown in FIG. 8B, the film-like water W discharged from the discharge port 11 is divided in the width direction. There was a case that it ended up. This is because the velocity component of the water flow discharged from the widthwise both ends 11a of the discharge port 11 toward the outside in the width direction becomes too large, and the water flow flowing from the widthwise both ends 11a of the discharge port 11 flows from the widthwise intermediate portion 11b. It is thought that this is because it becomes easier to separate. Since it was found that when the angle θ1 is 45 ° or more, it becomes easy to suppress the division of the film-like water W in the width direction, this is determined.

Returning to FIG. 7, both side surfaces 33a of the discharge passage 33 are formed by an arc portion 53 that curves inward in the width direction as it approaches the discharge port 11 from the back surface 33b of the discharge passage 33. The back surface 33b is provided as a wall surface for partitioning the storage chamber 45 of the discharge passage 33. The arc portion 53 is provided in a range from a position connected to the inner surface 33b of the discharge passage 33 to the discharge port 11. The reason for this will be explained.

FIG. 9A is a diagram showing a part of the water flow when the side surface 33a of the discharge passage 33 is formed by the straight line portion 55. This figure is shown as a modification of the present invention. The straight portion 55 is formed in a straight line from the inner surface 33b of the discharge passage 33 toward the discharge port 11. Even in the form shown in this figure, since the angle θ1 formed by the side surface 33a of the discharge passage 33 is formed to be 45 ° or more and less than 90 °, the film-like water is suppressed while suppressing the shrinkage of the film-like water W. It becomes easy to suppress the division of W.

A part of the water flow flowing from the inflow port 49 flows in the left-right direction X on the back side of the discharge passage 33. Here, in the case of the shape shown in FIG. 9A, this water flow collides with the side surface 33a of the discharge passage 33 at a relatively large angle θ2.

FIG. 9B is a diagram showing a part of the water flow when the side surface 33a of the discharge passage 33 is formed by the arc portion 53. In this case, the water flow flowing in the left-right direction X on the inner side of the discharge passage 33 is the inner part of the discharge passage 33 as compared with the case where the side surface 33a of the discharge passage 33 is formed in a straight line (see FIG. 9A). The more it flows on the side, the smaller the angle θ2 when it collides with the side surface 33a of the discharge passage 33. Therefore, the water flow flowing in the left-right direction X on the inner side of the discharge passage 33 is unlikely to decrease in flow velocity even if it collides with the side surface 33a of the discharge passage 33, and is guided along the side surface 33a of the discharge passage 33 while maintaining the momentum. It becomes easy to be done. As a result, the water flow is easily discharged from the width direction end portion 11a of the discharge port 11 along the tangent line L2, and the water flow including the velocity component outward in the width direction is easily discharged from there. Therefore, as compared with the case where the side surface 33a of the discharge passage 33 is formed by the straight portion 55, it becomes easier to discharge the water flow along the tangent line L2 from the widthwise end portion 11a of the discharge port 11, and the squeeze of the film-like water is stabilized. It becomes easy to suppress.

In the water discharge member 13 according to the above embodiment, the water pumped from the water supply pump 121 (see FIG. 3) flows into the storage chamber 45 from the inflow port 49 through the headrace 43, and is temporarily stored in the storage chamber 45. It is stored as water. When water is sent from the inflow port 49 in a state where the stored water is stored in the storage chamber 45, the stored water in the storage chamber 45 is pressurized, and the stored water is discharged through the throttle flow path 47 by the water pressure. , And the membranous water is discharged from the discharge port 11.

Here, the water flowing in from the inflow port 49 on the upstream side flows from the inflow port 49 toward the inlet 47a of the throttle flow path 47. The flow velocity of this water flow decreases as it passes through the storage chamber 45, and the flow velocity becomes uniform in the width direction of the discharge passage 33 from the inflow port 49 to the inlet 47a (see FIG. 6) of the throttle flow path 47. It is effectively rectified so that it becomes. As a result, the flow velocity of the water flow discharged from the discharge port 11 can be easily made uniform in the width direction, and the disorder of the shape of the film-like water can be suppressed.

Further, since the shape is such that the passage width of the discharge passage 33 widens from the back side of the discharge port 11 toward the discharge port 11, it becomes easy to suppress the squeezing of the film-like water. In particular, since the angle θ1 formed by the side surface 33a of the discharge passage 33 is 45 ° or more and less than 90 °, it is possible to suppress the squeezing of the film-like water and the division of the film-like water. As a result, the disorder of the shape of the film-like water discharged from the discharge port 11 can be suppressed, and the film-like water having an excellent aesthetic appearance can be discharged.

The width of the discharge port 11 is not particularly limited. According to the knowledge of the present inventor, in the conventional water discharge device, for example, when the width dimension is 150 mm or more, the shape of the film-like water is easily disturbed. Therefore, if the present invention is applied to a discharge port 11 having a width dimension of 150 mm or more, the disorder of the shape of the film-like water can be suppressed particularly effectively.

[Second Embodiment]
FIG. 10A is a plan view showing a discharge port 11 and a discharge passage 33 of the water discharge device 10 according to the second embodiment, and FIG. 10B is a view showing a side surface 33a of the discharge passage 33 and a part of the discharge port 11. Is. In the following description, the same reference numerals will be given to the configurations common to the first embodiment, and the description thereof will be omitted.

The discharge port 11 is formed in an arc shape that is curved so as to be recessed in the direction from the discharge port 11 toward the back side in a plan view. The side surfaces 33a on both sides of the discharge passage 33 in the width direction are also formed so that the acute angle θ1 formed by the virtual line L1 and the tangent line L2 is 45 ° or more and less than 90 ° in the present embodiment as well. Also in this embodiment, as in the first embodiment, it becomes easy to suppress the disorder of the shape of the film-like water discharged from the discharge port 11. As described above, the discharge port 11 may be formed in a slit shape, and its shape is not particularly limited.

[Third Embodiment]
FIG. 11A is a plan view showing a discharge port 11 and a discharge passage 33 of the water discharge device 10 according to the third embodiment, and FIG. 11B is a view showing a part of a side surface 33a of the discharge passage 33. The side surfaces 33a on both sides of the discharge passage 33 in the width direction are formed by the entry side surface portion 63 and the back side surface portion 65. The entrance side surface portion 63 is provided so as to be connected to the opening edge 51 on the discharge port 11 side of the discharge passage 33. The back side surface portion 65 is provided on the back side of the discharge passage 33 from the entrance side surface portion 63. The surface portions 63 and 65 are formed in a straight line so as to narrow the passage width as the surface portions 63 and 65 approach the inner surface 33b of the discharge passage 33 from the discharge port 11. The face portions 63 and 65 are formed so that their boundary portions 57 are convex toward the outside in the width direction. The surface portions 63 and 65 are formed so that the angle θ3 formed by the tangent line L3 passing through the back side surface portion 65 and the virtual line L1 is smaller than the angle θ1 formed by the tangent line L2 passing through the entrance side surface portion 63 and the virtual line L1. To.

The side surfaces 33a on both sides of the discharge passage 33 in the width direction are also formed so that the acute angle θ1 formed by the virtual line L1 and the tangent line L2 is 45 ° or more and less than 90 ° in the present embodiment as well. Therefore, also in this embodiment, it becomes easy to suppress the disorder of the shape of the film-like water discharged from the discharge port 11.

Further, even in the water discharge device 10 according to the present embodiment, the water flow flowing in the left-right direction X on the back side of the discharge passage 33 is a case where the side surface 33a of the discharge passage 33 is simply formed in a straight line (see FIG. 9A). The angle at the time of collision with the back side surface portion 65, which is the side surface 33a of the discharge passage 33, becomes smaller. Therefore, the water flow flowing in the left-right direction X on the inner side of the discharge passage 33 is unlikely to decrease in flow velocity even if it collides with the side surface 33a of the discharge passage 33, and is guided along the side surface 33a of the discharge passage 33 while maintaining the momentum. It becomes easy to be done. As a result, it becomes easy to discharge the water flow along the tangent line L2 from the widthwise end portion 11a of the discharge port 11, and it becomes easy to stably suppress the squeeze of the membranous water.

In addition, in order to exert the same action and effect, the following structure may be used. The side surface 33a of the discharge passage 33 has a single back side surface portion 65 in the third embodiment, but may have a plurality of back side surface portions 65 as shown in FIG. 12A. The back side surface portion 65 has a first back side surface portion 65A provided on the back side of the entrance side surface portion 63 and a second back side surface portion 65B provided on the back side of the first back side surface portion 65A. Each of the back side surface portions 65A and 65B has an angle θ4 formed by the tangent line L4 passing through the second back side surface portion 65B and the virtual line L1 from the angle θ3 formed by the tangent line L3 passing through the first back side surface portion 65A and the virtual line L1. It is formed to be small. In any case, the entrance side surface portion 63 and the back side surface portion 65 have a tangent line passing through the surface portions 63 and 65 and a virtual line L1 on the back side of the discharge port 11 than on the discharge port 11 side. It suffices if it is formed so that the angle formed is small.

Further, the back side surface portion 65 of the discharge passage 33 is formed linearly in the third embodiment, but as shown in FIG. 12 (b), the passage as the discharge port 11 approaches the back surface 33b of the discharge passage 33. It may be formed in an arc shape that curves so as to narrow the width. Also in this case, the angle θ3 formed by the tangent line L3 passing through the back side surface portion 65 and the virtual line L1 is smaller than the angle θ1 formed by the tangent line L2 passing through the entrance side surface portion 63 and the virtual line L1. The entrance side surface portion 63 may be formed in an arc shape like the back side surface portion 65.

Although the present invention has been described above based on the embodiments, the embodiments merely show the principles and applications of the present invention. Further, in the embodiment, many modifications and arrangements can be changed without departing from the idea of the present invention defined in the claims.

The water discharge device 10 has described an example in which the substrate to be installed is the bathtub 110, but the specific configuration of the substrate is not limited to this. In addition to this, the water discharge device 10 may be installed using a washbasin in a washroom, a sink in a kitchen, or the like as a substrate. In any case, the installation surface 117 may be provided on the substrate, and the water discharge device 10 may be installed on the installation surface 117. Further, although the example in which the installation surface 117 is provided on the rim portion 115 of the bathtub 110 has been described, the position thereof is not limited to this.

The lower split member 17 and the upper split member 19 are detachably assembled by a fastener, but the present invention is not limited to this, and the lower split member 19 may be assembled by a snap fit or the like. Although the inflow port 49 is formed on the lower surface 45a of the storage chamber 45, it may be formed on the inner wall surface of the storage chamber 45, and may be formed on the inner wall surface 33b or the side surface thereof.

Hereinafter, the effects of the present invention will be further described with reference to Examples. In this example, the shape of the membranous water was confirmed by using the water discharge devices of Comparative Examples 1 to 3 and Invention Examples 1 to 3 described below.

Water spouting members having different angles θ1 were prepared based on the water spouting member 13 having the shape shown in FIG. 7, and these were used as Examples 1 to 3 and Comparative Examples 1 and 2. In Invention Examples 1 to 3, the angles θ1 of the side surfaces 33a of the discharge passage 33 are set to 69 °, 50 °, and 80 °, respectively. In Comparative Examples 1 and 2, the angles θ1 of the side surfaces 33a of the discharge passage 33 were set to 90 and 40 °, respectively.

In addition to this, a water discharge member 13 having a discharge passage 33 having a shape as shown in FIG. 13 was prepared and used as Comparative Example 3. In Comparative Example 3, the side surface 33a of the discharge passage 33 has a linear entry side surface portion 63 connected to the opening edge 51 of the discharge port 11 and an arc-shaped back side surface portion 65 provided on the back side of the discharge passage 33. .. In Comparative Example 3, the entrance side surface portion 63 of the discharge passage 33 has an angle θ1 of 90 °.

In each example, the discharge port 11 has a width dimension of 435 [mm], a height in the vertical direction of 1 [mm], and a supply speed of 33 [l / min] from the water supply pump 121 to the inflow port 49. ], Water was sent under the conditions.

As a result, it was confirmed that in Invention Examples 1 to 3, no squeezing or division was observed in the membranous water, and the disorder of the shape of the membranous water could be suppressed. On the other hand, in Comparative Examples 1 and 3, since the angle θ1 was 90 °, the film-like water was greatly deflated. Further, in Comparative Example 2, since the angle θ1 was 40 °, which was less than 45 °, the film-like water was divided in the width direction.

10 Water discharge device, 11 Discharge port, 13 Water discharge member, 33 Discharge passage, 33a side surface, 33b back surface, 45 storage chamber, 47 throttle flow path, 51 opening edge, 53 arc part, 100 bathtub device, 110 bathtub L1 virtual line, L2 tangent.

Claims (2)

A water spouting device for spitting out membranous water.
A water discharge member including a slit-shaped discharge port and a discharge passage for supplying water to the discharge port is provided.
In the discharge passage, a storage chamber for storing water flowing in from the upstream side as storage water is formed, and a throttle flow path for sending the stored water in the storage chamber to the discharge port is formed.
The side surfaces on both sides of the discharge passage in the width direction are formed so as to be connected to the discharge port and the width of the passage widens as the storage chamber side approaches the discharge port side, and are parallel to the width direction of the discharge port. The virtual line is formed so that the acute angle formed by the tangent line passing through the opening edge of the discharge port on the side surface is 45 ° or more and less than 90 °.
The water discharge member discharges film-like water forward from the discharge port.
The water discharge device is characterized in that the discharge port is formed in an arc shape that is curved so as to be recessed in a direction from the discharge port toward the back side in a plan view. The water discharge device according to claim 1 and
A bathtub device including a bathtub in which the water discharge device is installed.

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